CVE-2026-123862: nodejs node · Uncaught Exception
Affects nodejs nodeSource CVE Database V5
Not known to be exploited · CVSS 2.9 Low · fixed in 26.13.1 : update nodejs node when convenient.
Data as of 11 Nov 2026, 18:35 UTC
Thin evidence
One scorer or none| CNA (openjs) | CVSS 3.0 | 2.9 |
|---|
- Patch
- Available – fixed in 26.13.1, 24.22.3, 22.23.5
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LExploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.
What to do
Upgrade nodejs node to 26.13.1, 24.22.3 or 22.23.5.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| nodejsnode | Affected
| Fixed in
|
| nodejsnode | Affected
| Fixed in
|
| nodejsnode | Affected
| Fixed in
|
AI-suggested
Upgrade Node.js to fixed versions 22.23.5, 24.22.3, or 26.13.1 as appropriate. These versions contain the official fix for this issue. No additional mitigation is required if upgrading is performed.
Description
CVE-2026-123862 is a low-severity vulnerability in Node.js versions 22.x, 24.x, and 26.x where an uncatchable exception can occur in the zlib streaming API. This happens when a peer disconnects during data compression using deflate.params(), causing an internal assertion failure that terminates the process. The issue arises because the stream's native handle is destroyed but the callback asserts its existence, leading to a process crash. This affects applications that call deflate.params() while streaming to a peer, which is uncommon.